Parker 42F-6 Brass Flared Tube Union 3/8 in 45 Degree

Product Description

The PARKER 42F-6 is a brass flared tube union designed for joining two flared tube ends in a single in-line connection. It uses a 45-degree flare angle with Flare x Flare end connections and a 5/8-18 UNF thread, making it a standard SAE-style fitting for refrigeration, HVAC, and fluid-system tubing runs. The fitting handles up to 1000 psi working pressure and a maximum temperature of 250 degrees F, keeping it well within the operating range of most commercial and residential refrigerant and fluid lines. HVAC technicians and plumbers install this fitting where two tube ends must be joined without a sweat or compression joint.

This union fits 3/8-inch OD tubing and is appropriate for use in residential and light commercial HVAC refrigerant lines, hydraulic fluid lines, and other applications where SAE J512 and SAE J513 flare-fitting standards are required. The 45-degree flare seat provides a leak-resistant metal-to-metal seal. This fitting is also UL Listed, making it suitable for installations subject to third-party inspection or code compliance requirements. Licensed HVAC technicians and pipefitters are the typical installers in both new construction and service work.

Key Features

• 45-degree flare angle meets SAE J512 and SAE J513 standards
• Flare x Flare end connections allow in-line tube union without soldering
• 5/8-18 UNF thread size for standard SAE flare nut compatibility
• Rated to 1000 psi maximum working pressure
• Maximum working temperature of 250 degrees F (121 degrees C)
• UL Listed for installations requiring third-party certification

Compatibility

Designed as an OEM-style SAE flare fitting for 3/8-inch OD tubing applications in HVAC refrigerant lines, hydraulic systems, and fluid distribution systems where 45-degree flare connections conforming to SAE J512 and SAE J513 are specified.

Installation Notes

Installation is performed by a licensed HVAC technician or pipefitter. The system must be fully depressurized and, where applicable, the refrigerant must be recovered in accordance with EPA Section 608 regulations before disconnecting or replacing any flare fitting. Both tube ends must be properly flared to a 45-degree angle using a quality flaring tool before assembly. Overtightening the flare nut can crack the flare seat, so hand-tighten first and use a flare-nut wrench to achieve a leak-free seal without deforming the fitting.